Prosecution Insights
Last updated: October 26, 2026

Ruth A Davis, USPTO Patent Examiner

Listed by the USPTO as DAVIS, RUTH A

Tech Center 1600 • Art Units: 1645 1651 1653 1699

This examiner grants 61% of resolved cases

Analysis

Ruth A. Davis has 919 resolved cases in Tech Center 1600 and Art Unit 1645. The allowance rate is 60.9%, with a median of 1169 days to allowance. The large case base supports a moderate allowance assessment, while the median timeline indicates that prosecution typically requires sustained attention.

The interview lift is 31.0%, suggesting that interviews may help focus issues and shape later written responses. The leading companies are DSM IP Assets, Ipsen Biopharm, and Genmont Biotech. Casimir Jones, NIXON & VANDERHYE, and PROSKAUER ROSE are the listed leading firms.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

60.9%
Allow Rate
+0.9% vs TC avg
965
Total Applications
+31.0%
Interview Lift
1169
Avg Prosecution Days
Based on 919 resolved cases, 2023–2026

Rejection Statute Breakdown

3.8%
§101 Eligibility
15.6%
§102 Novelty
36.6%
§103 Obviousness
27.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18872675 COMBINATIONS COMPRISING VITAMIN C AND LACTOBACILLUS RHAMNOSUS Non-Final OA DSM IP Assets B.V.
18834722 YARROWIA PRODUCTION PROCESS Non-Final OA DSM IP ASSETS B.V.
17796487 A METHOD FOR DETERMINING AN ORDER IN WHICH A FOOD PRODUCT IS CULTURED Final Rejection DSM IP ASSETS B.V.
18867205 MICROORGANISM BELONGING TO GENUS AKKERMANSIA Non-Final OA OTSUKA PHARMACEUTICAL CO., LTD.
18035134 COMPOSITIONS AND METHODS FOR SCREENING PESTICIDES Final Rejection Arizona Board of Regents on Behalf of the University of Arizona
18563088 ANTI-OXIDANT CONTAINING PARTICLES AND METHODS OF USE Non-Final OA The United States Government, as Represented by the Department of Veterans Affairs
18836135 USE OF PROBIOTICS FOR MODULATING ALLERGIC IMMUNE RESPONSES Non-Final OA INTERNATIONAL N&H DENMARK APS
18713941 CORYNEBACTERIUM GLUTAMICUM VARIANT HAVING IMPROVED L-LYSINE PRODUCTION ABILITY AND METHOD FOR PRODUCING L-LYSINE BY USING SAME Final Rejection DAESANG CORPORATION
18687533 ENZYME AGENT FOR TRANSESTERIFICATION, INCLUDING LIPASE AS ACTIVE INGREDIENT Non-Final OA AMANO ENZYME INC.
18265076 ELEVATION OF GLYCOSAMINOGLYCANS IN SUBJECTS WITHOUT MUCOPOLYSACCHARIDOSIS Final Rejection THE NEMOURS FOUNDATION

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Frequently Asked Questions

What is examiner Ruth A Davis's allowance rate?

60.9% of resolved applications examined by Ruth A Davis were allowed (919 resolved cases), compared with 49.5% across Art Unit 1645 over the last five years.

Does an interview help with examiner Ruth A Davis?

This examiner's interview lift is +31.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Ruth A Davis take to allow a patent?

Applications allowed by Ruth A Davis took 1,169 days on average from filing to allowance.

Which art unit does examiner Ruth A Davis work in?

Ruth A Davis examines applications in Art Unit 1645 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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